Patents by Inventor Bruce Edward Firth

Bruce Edward Firth has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Reactive, low molecular weight, viscous poly(1-olefins) and copoly(1-olefins) and their method of manufacture
    Patent number: 6043401
    Abstract: Catalysts and processes are described to make low molecular weight, essentially terminally-unsaturated, viscous poly(1-olefin) or copoly(1-olefin) having a high terminal vinylidine content from a feed stock containing one or more 1-olefin and other volatile hydrocarbon liquids using a Ziegler catalyst made from a Group IVb metallocene and an aluminoxane cocatalyst, particularly bis(cyclopentadienyl) and bis(indenyl) titanium(IV), zirconium(IV) or hafnium(IV) compounds and methylaluminoxane. A particularly useful feed stock is a refinery stream containing 1-olefins and isobutylene which is used to make polyisobutylene.
    Type: Grant
    Filed: January 15, 1998
    Date of Patent: March 28, 2000
    Assignee: BP Amoco Corporation
    Inventors: Vahid Bagheri, Bruce Edward Firth, Frank Calabrese, Robert Scott Hensey
  • Reactive, low molecular weight, viscous poly(1-olefins) and copoly(1-olefins) and their method of manufacture
    Patent number: 5688887
    Abstract: Catalysts and processes are described to make low molecular weight, essentially terminally-unsaturated, viscous poly(1-olefin) or copoly(1-olefin) having a high terminal vinylidine content from a feed stock containing one or more 1-olefin and other volatile hydrocarbon liquids using a Ziegler catalyst made from a Group IVb metallocene and an aluminoxane cocatalyst, particularly bis(cyclopentadienyl) and bis(indenyl) titanium(IV), zirconium(IV) or hafnium(IV) compounds and methylaluminoxane. A particularly useful feed stock is a refinery stream containing 1-olefins and isobutylene which is used to make polyisobutylene.
    Type: Grant
    Filed: December 21, 1995
    Date of Patent: November 18, 1997
    Assignee: Amoco Corporation
    Inventors: Vahid Bagheri, Bruce Edward Firth, Joanna Kyrle Money, Eric Jan Moore, Frank Calabrese, Robert Scott Hensey